For many interested earphone-enthusiasts, who spend a
lot of money on their hobby, only a melodious tube amplifier is
possible as a driver. The answer to the question: „ Which do I take?
“ can only say: the EARTUBE of AudioValve!

The Eartube was developed especially for the highest-quality
reproduction with earphonesand serves very well impedances of 16
to 200 ohms. He unfolds his big strength with roughly 4 watts per
canal in 100 ohms. For that reason he is very well suitable e.g.
for the K1000 by AKG.

The Eartube is a pure tube amplifier and owns no semiconductor
in the signal way. Merely the stabilization for the tube heatings
and anode tensions occurs highly exactly with semiconductors.

The amplifier owns two switchable entrances with different
delicacy. Thus can be connected, e.g., CD player and TUNER at the
same time.

The input circuit of the amplifier owns three tubes of
the Type 6N3P and prepares the signal for the output stage tubes.
In this area of the circuit also the volume potentiometer with the
shiftable or detachable Crossfeed filter is located, to distribute
potential signal bass charge on merely one ear to both ears.

The output stages use the power Tetrode of the type: QQE
03/12 as the military version by SIEMENS and work in circuit PP
with a transformer which is tuned especially to the interests of
earphones.

The final tubes work constantly in Class A and are postregulated
automatically optimally in the Bias closed current, so that tolerance
and aging of the tubes do not matter.

The care tensions are won from a strong, free of litter,
Torodial-Transfomator. The amplifier itself rests on one single
two-page printed circuit board and was adapted signal-technically
optimally. For this reason also the potentiometer is in the rear
part of the printed circuit board to hold the signal way short.
All parts on the PCB are of the best quality and selected carefully
to do justice to the requirements of the reproduction in every regard.
The case is from metal and prevents interferences from the outside.
It is available in the colours black and silver.

Like all products of AudioValve this amplifier also distinguishes
itself especially by his exceptional musicality which is based at
last also on the fantastic technical values of the circuit and their
stability. As a user you will be able to enjoy this product in the
highest perfection for many years enthusiastically and come with
it to the pleasure of fantastically detached musical reproduction
with your headphones.

As a second model of its amplifier named EARTUBE MARK II - USB. In its amp, we have installed a very populare DIGITAL audio player for USB sticks or SD cards. Its player can handle memory size up to 8 GB and supported MP3 and WAV files. An FM reseiver is integrated too. You can direct select your music titles by panel buttons on front or with the remote control. Its nice to handle and simple to use and satisfight everyone who like
to hear memorized digit music from sticks .....

Digital Audio Player - technicial describtions and possibilities:

* Play music from any USB / sticks or SD - card up to 8 GB with MP3 or WAV format files / FM radio integrated

Play/Pause : Short press for Paly or Pause for USB and SD state (also for

auto-search channels and save them in FM state)

Remote Control Keys function

Power : ON/OFF (standby )

Mode : Switch order will be USB SD FM USB (if have USB memory and SD card) , Switch order will be USB FM USB (if only have USB memory) Switch order will be SD FM SD (if only have SD card )

PREV :Same functions as Previous Button on pannel

NEXT: Same functions as Next Button on pannel

VOL+ : Same functions as VOL+ Button on pannel

VOL-: Same functions as VOL- Button on pannel

REP: For switching one song repeat or all song repeat in USB/SD state,

default is all song repeat .

*SET : Setting for Time Alarm Sleep Language Finish

MUTE: First press mute , press again will release from mute.

EQ : NORMAL, JAZZ, ROCK, POP, CLASSIC, COUNTRY

PLAY/PAUSE : For play and pause in USB/SD state , for auto-search

channel and save them in FM state.

Button 0-9 : select song in USB/SD state, if the song number over 9 , just input the numbers in series.

After the summer vacation we will have as a new unit an digital audio player who can handle USB - sticks or SD - memory cards up to 8 GB with music files in MP3 and WAV file format. Also its unit have a FM receiver. Its functions all can be handle from front panel buttons or from the remote control.

The best of all is - its unit has an MM - phono amplifier integrated too. The technologie is very popular "OLD SCHOOL" transistor technology and very very good to combine with a vinyl turntable player.

On the front panel its goods is a selector to select between PHONO - or - DIGITAL PLAYER mode, so the back panelo its model have only 2 pairs of RCA jackets ...

MM input from turn table

One line OUTPUT for the pre amplifier.

We deliver its unit with an universal main power adapter for 100 - 250 VAC and a remote control.